FACT SHEET - Primary Aggregates Suppliers

1 Day Group s water Treatment department has many years experiencein the supply and installation of filter media and other supportproducts and specialises in the use of blast furnace slag as a media inpercolating Group Limited, Transport Avenue, Brentford, Middlesex TW8 9HF Telephone: 020 8380 9600 Facsimile: 020 8380 9700 3 May 2011 FACT SHEETW ater Treatment Products and ServicesBenefits of Day Group s water Treatment Service Flexible delivery National service covering the UK and Eire Access to a full range of high quality productsServices offered to clients within the water industry Site filter surveys Budget costs New filter construction Existing filter refurbishment Recycling of existing filter media Associated civil works Declassification of contaminated mediaBlast furnace slag is the best mineral filtration media The advantages are.

2 Lightweight Large specific surface area (up to 150sqm per m3) Excellent moisture retention Fully recyclable Structurally sound and robustKey Products available nationally Blast Furnace Slag Filter Media BS1438:2004 Sand Filter Media Washed Support Gravels Pre-cast wall sections and filter drainage support tiles Loose or bagged productsHow to contact usNorthern enquiries: 0151 428 7000 Facsimile:0151 428 7172 Southern enquiries:020 8380 9600 Facsimile:020 8380 see reverse for material gradings and technical properties summaryAir Cooled Blast Furnace SlagTypical ValuesSOURCE-: EX PORT TALBOT, SCUNTHORPE, TEESPORTA ggregate Crushing Value3510% Fines Value Soaked85knAggregate Impact Value (Dry)33 Sodium Sulphate SoundnessAverage weight loss Absorption (% By Weight) Stone Value53 - 57BS 1438: 2004 Table 1 Grading Limits For MediaBS 410 Square hole NOMINAL SIZES - mmGradedperforated plateproductiontest sieve40/6332/5020/4014/3210/206/1475/40% BY WEIGHT PASSING7510095/1006385/10010070/100500/3 585/10010040/80400/50/3085/1001000 to 30 to 30 to 30 to 30 to 30 to to 10 to 10 to 10 to 10 to 10 to 1 Bulk Density for graded material represents maximum oversize or undersize material permitted by British Standard 1438.

3 2004 NominalSpecific surface area (m2/m3) Type of mediumMaximumGraniteBlast furnace SlagCrushed GravelSize of MediaRange forRange forRange for(mm)graded materialgraded materialgraded material20/40135129 - 149146140 - 163125120 - 14032/509794 - 111104101 - 1188986 - 10140 - 858179 - 906967 - 77 Material gradings and sizesSpecific surface areas for various mediaDay Group Limited, Transport Avenue, Brentford, Middlesex TW8 9HF Telephone: 020 8380 9600 Facsimile: 020 8380 9700 3 May 2011 FACT SHEETW ater Treatment Products and ServicesSingle-sizeSingle-sizeSingle-siz